Waterproof Custom Power Distribution Box For Solar System PV Outdoor Wiring Junction Box

Our Waterproof PV Distribution Box is a critical component for any solar energy installation, designed to act as the central junction for outdoor wiring. Engineered specifically for the Photovoltaic (PV) industry, this enclosure provides a secure, weather-protected environment for DC circuit breakers, surge protection devices (SPDs), and fuse links.

Built to withstand extreme UV exposure and temperature fluctuations, this junction box ensures the long-term safety and efficiency of your solar array, protecting your investment from electrical faults and environmental degradation.

Solar installations are exposed to the harshest sunlight. Our enclosures are manufactured with UV-stabilized Polycarbonate (PC) covers and high-density ABS bases. This prevents the material from becoming brittle or cracking under long-term exposure to intense radiation and thermal cycling.

Equipped with a continuous, high-resilience silicone sealing ring, the box prevents the ingress of moisture even during heavy rain or snowmelt. This is essential for preventing corrosion on electrical terminals and maintaining low contact resistance in the DC circuit.

The interior features a pre-installed, galvanized steel DIN rail. This allows for the rapid integration of standard solar components, including:

• DC Circuit Breakers (MCB)
• Surge Protective Devices (SPD)
• DC Isolator Switches
• PV String Fuses

The clear PC cover allows maintenance personnel to inspect the status of breakers and indicators without opening the enclosure, maintaining the internal seal and preventing accidental exposure to live components.

• Residential Solar Rooftops: Acts as a string combiner box for home energy systems.
• Commercial PV Arrays: Centralized wiring hub for larger solar installations on warehouses or factories.
• Off-Grid Power Stations: Reliable housing for battery charging controls and inverter inputs in remote areas.
• Solar Pump Systems: Protecting power controls for agricultural irrigation systems.

• Pre-molded Knockouts: Features various sizes of knockouts to accommodate standard PG or Metric cable glands, ensuring a tight seal for cable entry and exit.
• Internal Grounding: Includes dedicated grounding terminals to ensure the entire PV system is safely earthed.
• Standard Compliance: Designed to meet IEC 60670 and CE certification requirements for low-voltage switchgear.